diff options
| author | Peter Shkenev <mustela@erminea.space> | 2025-07-17 23:48:17 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:31:02 +0200 |
| commit | 83cfdc2b018cd9c0f927b781d4e07c0d4a911fac (patch) | |
| tree | 4ce81f5abd5c2be5d5b838cabe084f66134ff7d7 | |
| parent | 71598a5a7797f0052aaa7bcff0b8d4b8f20f1441 (diff) | |
drm/amdgpu: check if hubbub is NULL in debugfs/amdgpu_dm_capabilities
commit b4a69f7f29c8a459ad6b4d8a8b72450f1d9fd288 upstream.
HUBBUB structure is not initialized on DCE hardware, so check if it is NULL
to avoid null dereference while accessing amdgpu_dm_capabilities file in
debugfs.
Signed-off-by: Peter Shkenev <mustela@erminea.space>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c index 15d94d2a0e2f..97a9b37f78a2 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c @@ -3932,7 +3932,7 @@ static int capabilities_show(struct seq_file *m, void *unused) struct hubbub *hubbub = dc->res_pool->hubbub; - if (hubbub->funcs->get_mall_en) + if (hubbub && hubbub->funcs->get_mall_en) hubbub->funcs->get_mall_en(hubbub, &mall_in_use); if (dc->cap_funcs.get_subvp_en) |